PS3 Flash memory
The PS3 has 256 megabytes of flash memory to store firmware, using two NAND 128MB Samsung flash chips. The installed firmware data is interleaved between the two flash chips for speed. To prevent errors, Error Correcting Code Checksum (ECC) is added/used on the data in the PS3 flash chips. In newer PS3, a single 16MB Spansion flash chip is used.
NAND Flash 128MB 30ns 3.3V 48-pin Samsung K9F1G08U0A-PIB0 256MB total (2 chips) for older model PS3 flash memory
Flash 16MB 80ns 3V 56-pin, 100nm Spansion S29GL128N90TFIR2 16MB total (1 chip) for newer model PS3 flash memory
Flash 16MB 80ns 3V 56-pin, 100nm Samsung K8Q2815UQB-P14B 16MB total (1 chip) for CECHL PS3 flash memory
Because of the smaller flash chips in later versions, newer firmware versions allow for the firmware data to be partially stored on the hard drive (instead of totally inside the flash), making the flash purely responsible for holding data involved in the critical booting up process. This allows for cheaper flash chips, while using the hard drive for later bootup stages